linux-kernel - Re: [PATCH 000/190] Revertion of all of the umn.edu commits

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Message-ID: <8bef2ac8-2e05-a0b5-3518-e59ad32e0138@kernel.org>
Date:   Wed, 21 Apr 2021 20:08:31 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Al Viro <viro@...iv.linux.org.uk>, Kangjie Lu <kjlu@....edu>
Cc:     Guenter Roeck <linux@...ck-us.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Jiri Kosina <jikos@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        open list <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Aditya Pakki <pakki001@....edu>, Qiushi Wu <wu000273@....edu>,
        x86@...nel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Arnd Bergmann <arnd@...db.de>, David Airlie <airlied@...ux.ie>,
        Michael Turquette <mturquette@...libre.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Jean Delvare <jdelvare@...e.com>,
        Will Deacon <will@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Johan Hovold <johan@...nel.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Johannes Berg <johannes@...solutions.net>,
        Takashi Iwai <tiwai@...e.com>
Subject: Re: [PATCH 000/190] Revertion of all of the umn.edu commits

On 21/04/2021 19:48, Al Viro wrote:
> On Wed, Apr 21, 2021 at 08:59:34AM -0700, Guenter Roeck wrote:
>> On 4/21/21 8:21 AM, Kangjie Lu wrote:
>>
>>> All of the commits sent by my students are in good faith to fix some bugs.
> 
> 
> Just to make sure - does that statement cover the following commit?
> 
> commit 0c85a7e87465f2d4cbc768e245f4f45b2f299b05
> Author: Aditya Pakki <pakki001@....edu>
> Date:   Tue Apr 6 19:09:12 2021 -0500
> 
>     net/rds: Avoid potential use after free in rds_send_remove_from_sock
> 
> And is "Ph.D. student in Computer Science" an accurate description of
> the gentleman in question?
> 
> We all made utterly bonehead mistakes (if you want a fresh example
> of mine, take a look at 161aff1d93ab "LOOKUP_MOUNTPOINT: fold
> path_mountpointat() into path_lookupat()"; see 035d80695fae for the
> merge of the fix and explanation of what was wrong in the original
> commit).
> 
> However, there's a general expectation that once you become aware of
> dumb mistake in something you have published (and merge into mainline
> certainly qualifies as publication) you shall retract it as soon
> as possible.  If a student is not aware of such expectation, their
> advisor really ought to inform them of it.

Mentioned gentleman was also notified on 8th of April with Coverity
report that his patch is questionable:
https://lore.kernel.org/linux-next/202104081640.1A09A99900@keescook/

The report was ignored by the patch author.

Best regards,
Krzysztof